A number of pupils have been taken to hospital after a teacher and 27 students collapsed at a school in North Yorkshire, emergency services have said.
Police and Yorkshire Ambulance Service are in attendance at Outwood Academy School in Ripon after staff called for assistance at around 12.30pm on Wednesday, saying numerous students were displaying "signs of sickness and feeling faint".
It is not yet clear what caused the incident, which is thought to have taken place between 11 and 11.30am, however the fire and rescue service confirmed specialist hazardous materials officers were in attendance.
One Sky News journalist tweeted reports of the first person fainting during the morning's minute silence, followed by several others.
Pupil of Outwood Academy, #Ripon reports that the first person fainted during this morning's minute's silence, quickly followed by 7 others.— Hazel Baker (@HazelBakerSky) November 11, 2015
A parent of one pupil, who did not wish to be named, told the BBC two children had collapsed during a Remembrance Day service.
"I rang the school to check my daughter was OK. I was told a couple of children had collapsed during a remembrance service," he said. "As it finished another couple went down. That's when the fire brigade were called."
A spokesperson for North Yorkshire Police said: "Emergency services remain at the scene at Outwood Academy School on Clotherholme Road in Ripon.
"Police were called at around 12.30pm on Wednesday 11 November, to reports that a number of students had collapsed at the school and a number of others had taken ill.
"It is believed the incident happened sometime between 11am and 11.30am.
"Approximately 27 students have been affected who have displayed signs of sickness and feeling faint. Some have been attended to by paramedics at the scene and others have been taken to hospital.
"At this stage it is not known what has caused the students to fall ill and officers are working with the fire service to establish what has caused the incident."
North Yorkshire Fire and Rescue Service added: "Crews from Ripon and Boroughbridge are at the scene alongside Hazardous Materials Specialist Officers. A specialist detection, identification and monitoring (DIM) team from West Yorkshire Fire and Rescue Service is also at the incident.
"A number of students have been affected who have displayed signs of sickness and feeling faint. Some have been attended to by paramedics at the scene and others have been taken to hospital."
According to the school's website: "Outwood Academy Ripon is part of the Outwood Grange Academy family of schools; it offers young people in the local area the best education and opportunities to fulfil their potential and we are very proud of our students and their successes."
The school, on Clotherholme Road, has 635 students aged 11 to 18.
More to follow..